https://doi.org/10.1140/epjs/s11734-026-02479-5
Regular Article
Brain functional connectivity in Raven’s progressive matrices: a fNIRS study
1
Immanuel Kant Baltic Federal University, A. Nevskogo Str., 14, 236041, Kaliningrad, Russia
2
Research Institute of Applied Artificial Intelligence and Digital Solutions, Plekhanov Russian University of Economics, Stremyannyy Ln., 36, 115054, Moscow, Russia
a
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Received:
28
May
2026
Accepted:
19
June
2026
Published online:
1
July
2026
Abstract
In this study, we used fNIRS to examine functional connectivity during the Raven’s progressive matrices performance. The goal was to determine whether increased reasoning demands are associated with condition-dependent changes in large-scale cortical interactions. Based on the P-FIT framework and previous fMRI-based studies, we hypothesized that an increase in the task difficulty would be associated with network reorganization, particularly in the frontal and parietal regions. The results showed increased connectivity within and between the frontal, parietal, and occipital regions increased parieto-temporal connectivity, decreased fronto-temporal connectivity, and unchanged within-temporal connectivity. These results aligned with previous fMRI studies, but also offered new insight.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
